Haha it's funny you mention shift - the original idea for this game was an infinite runner like geometry dash but you would flip between black and white, to avoid obstacles. It eventually evolved into a platformer because we felt like there would be more room for fun gameplay mechanics. One of my friends said the idea was reminding him of an old flash game, so we looked it up and there it was - Shift! Funny how development works and you can end up with something similar. I'm glad you discovered the portal-like momentum. There are actually levels later on that make you use that mechanic! Thanks for the feedback :)